<script setup lang="ts">
import { getHotRecommendAPI } from '@/services/hot'
import type { HotResult, SubTypeItem } from '@/types/hot'
import { onLoad } from '@dcloudio/uni-app'
import { ref } from 'vue'

// 热门推荐页 标题和url
const hotMap = [
  { type: '1', title: '特惠推荐', url: '/hot/preference' },
  { type: '2', title: '爆款推荐', url: '/hot/inVogue' },
  { type: '3', title: '一站买全', url: '/hot/oneStop' },
  { type: '4', title: '新鲜好物', url: '/hot/new' },
]
// 获取navigator跳转过来时，url上传递的query
const query = defineProps<{
  // 根据不同的type，获取hotMap中不同的数据
  type: string
}>()

// 当前是哪一个hotMap项
let currHot = hotMap.find((item) => {
  return item.type === query.type
})

// 高亮的下标
const activeIndex = ref(0)

// 推荐页面的数据
let recomendData = ref<HotResult>()
// 商品总数据
let subTypes = ref<SubTypeItem[]>([])
// 请求页面数据
const getHotRecommendData = async () => {
  console.log('run??')
  let res = await getHotRecommendAPI(currHot!.url, params)
  recomendData.value = res.result
  subTypes.value = res.result?.subTypes
}

// 控制触底加载
let finished = ref(false)

// 控制请求页数
let params = {
  page: 30,
}

// 触底事件处理函数
const onScrolltolower = async () => {
  let tabGoods = subTypes!.value[activeIndex.value]

  console.log(tabGoods.goodsItems.page)

  if (tabGoods.goodsItems.page >= tabGoods.goodsItems.pages) {
    finished.value = true
  } else {
    finished.value = false
  }
  // ps：因为对象是引用类型，我们其实等于把subTypes里的数据 转存到了tabGoods里
  if (finished.value) {
    return uni.showToast({
      icon: 'none',
      title: '没有数据了',
    })
  }
  tabGoods.goodsItems.page++

  let res = await getHotRecommendAPI(currHot!.url, {
    page: tabGoods.goodsItems.page,
  })

  tabGoods.goodsItems.items.push(...res.result!.subTypes[activeIndex.value].goodsItems.items)
}

onLoad(async () => {
  await getHotRecommendData()
})

// 动态设置页面导航的title
uni.setNavigationBarTitle({
  title: currHot!.title,
})
</script>

<template>
  <vk-data-goods-sku-popup />
  <view class="viewport" v-if="recomendData">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image :src="recomendData?.bannerPicture"></image>
    </view>
    <!-- 推荐选项 -->
    <view class="tabs">
      <text
        class="text"
        :class="activeIndex == idx && 'active'"
        :key="item.id"
        v-for="(item, idx) in recomendData?.subTypes"
        @tap="activeIndex = idx"
      >
        {{ item.title }}
      </text>
    </view>
    <!-- 推荐列表 -->
    <scroll-view scroll-y class="scroll-view" @scrolltolower="onScrolltolower">
      <view
        class="goods"
        v-for="(tabList, idx) in recomendData?.subTypes"
        v-show="activeIndex == idx"
        :key="tabList.id"
      >
        <navigator
          hover-class="none"
          class="navigator"
          v-for="goods in tabList.goodsItems.items"
          :key="goods.id"
          :url="`/pages/goods/goods?id=${goods.id}`"
        >
          <image class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text"> {{ (finished && '加载完毕') || '正在加载...' }}</view>
    </scroll-view>
  </view>
</template>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}
.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}
.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
}
.scroll-view {
  flex: 1;
}
.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;
  .text {
    margin: 0 20rpx;
    position: relative;
  }
  .active {
    &::after {
      content: '';
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}
.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;
  .navigator {
    width: 345rpx;
    padding: 20rpx;
    margin-top: 20rpx;
    border-radius: 10rpx;
    background-color: #fff;
  }
  .thumb {
    width: 305rpx;
    height: 305rpx;
  }
  .name {
    height: 88rpx;
    font-size: 26rpx;
  }
  .price {
    line-height: 1;
    color: #cf4444;
    font-size: 30rpx;
  }
  .symbol {
    font-size: 70%;
  }
  .decimal {
    font-size: 70%;
  }
}

.loading-text {
  text-align: center;
  font-size: 28rpx;
  color: #666;
  padding: 20rpx 0 50rpx;
}
</style>
